Front duct portion of a motorcycle



FIG. 1 is a left, front perspective view of a front duct portion of a motorcycle showing our new design;

FIG. 2 is a right, front perspective view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is an enlarged left front perspective view thereof;

FIG. 8 is an enlarged left side elevational view thereof;

FIG. 9 is an enlarged front elevational view thereof; and,

FIG. 10 is an enlarged cross-sectional view thereof taken along line 10—10 of FIG. 9, and wherein the upper element is a headlight and the lower element is a bumper thereof.

The portion of the article shown in broken lines is for the purpose of showing environmental structure only and forms no part of the claimed design. The dash-dot-dash lines represent the boundaries of the claimed design and form no part thereof. 

The ornamental design for a front duct portion of a motorcycle, as shown and described. 